Add note to docstring

Author: MarcelRosier

brainles_preprocessing/registration/ANTs/ANTs.py

@@ -153,6 +153,7 @@ def transform(
     ) -> None:
         """
         Apply a transformation using ANTs.
+        By default the padding value corresponds to the minimum of the moving image. Can be adjusted using the defaultvalue parameter.
 
         Args:
             fixed_image_path (str or Path): Path to the fixed image.

brainles_preprocessing/registration/niftyreg/niftyreg.py

@@ -160,6 +160,7 @@ def transform(
     ) -> None:
         """
         Apply a transformation using NiftyReg.
+        By default the padding value corresponds to the minimum of the moving image.
 
         Args:
             fixed_image_path (str): Path to the fixed image.